FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
Mutants are more sensitive to the inhibitory effects of 2-aminoethoxydiphenyl borate than wild-type flies, as measured by the effect on the ERG response.
trp9, trplunspecified has abnormal visual behavior phenotype
trp9, trplunspecified has photoreceptor neuron phenotype
trplunspecified; trp9 double mutant photoreceptors have no light-induced currents. The photoreceptors of trplunspecified; trp9 double mutant flies carrying trpltrp.PS show transient responses to long pulses of light. The photoreceptors of trplunspecified; trp9 double mutant flies carrying trplCBS1.trp or trplCBS2.trp show robust inward currents for the duration of the stimulus in response to long pulses of light.